Multiobjective optimization problems are encountered in most real-world applications and
more recently in chemical processes ([1], [2], [3], [4]). Since such problems involve several
objective functions with conflicting nature, the final optimum is not unique but a set of non
dominated solutions (the Pareto front) which show a trade-off among the whole objectives. A
decision support approach is then used to rank the Pareto solutions according to the decision
maker’s preferences.

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The definitive version is available at: http://roadef2009.loria.fr/programme/Resumes.pdf